How can one get an accurate measure of an oven's temperature differential stability parameter ? It seems to me that there are a lot of variables out there such as the load capacity , the airflow in the oven ,etc. Thus if there are numerous ovens having the same kind of chamber but different airflow within the oven, it seems that there is no way to be able to derive a common temperature stability factor, right ? Rgds, Lucas ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################